Self-hosted Transaction Simulator for Web3 Enterprises

Unleash your MEV and make it your competitive advantage with this fastest, entirely secure, and highly responsive block
99% accuracy of transaction’s prediction
~20 msec of request’s processing speed
Multicall cost-efficient function
https://rpcfast.com

Features of our blockchain transaction simulator

We’re the fastest, customizable, and secure transaction simulator solution for your project. Being self-hosted, our transaction simulator provides you with total control over the environment. Thus, you get absolute protection for your project, with zero loss of functionality. Our solution is easy to implement and has the quickest ROI among similar products.
Blockchain UX testing tool
You get the full view of the contract completion process from A to Z without being carried out in the blockchain. Test your transactions in a safe and controlled environment.
Smart contract simulation
The blockchain transaction simulator predicts the outcome in the next generated block. Smart contract simulation improves exchanging strategies and enables new possibilities.
Unlimited customization
The flexibility of our solution causes zero-worries implementation and overcoming of your expectations. It’s both plug-and-play and bespoke in one glass.
Gas and cost optimization
Blockchain transaction simulator helps to spend less gas due to optimized testing of smart contracts. Also, you’ll see beforehand which transaction will be confirmed and which will revert.
Lowest possible latency
With a processing speed of around 20 msec (compared to the 500 msec of our nearest competitors), we boost any Web3 enterprise project.
Detailed payload
Get the complete information about the transaction completion thanks to complex payload logs: topics, diff states, etc.

Functions we’ve added based on the EVM tracing technologies

https://rpcfast.com

Transaction Simulator

No need to send your transactions on-chain to find out their results. Use all the power of EVM tracing to:
Reveal bugs and fix them for all valuable transactions.
Analyze the mempool to spend your gas optimally.
Edit any smart contract parameters and simulate a transaction to view the outcome.
Send new or edited transactions faster with exact changes in parameters to get the expected results immediately.

Multicall: Multiple transaction simulation

There’s no need to launch one simulation at a time: send us a bunch of them in one request to see how they will be performed one by one in the current block. Multiple simulation scenarios testing on a blockchain transaction simulator will save time and resources while covering the mempool, analyzing the transactions, or modeling the UX.

Diff state

No more unexpected transaction failures thanks to the blockchain transaction simulator.
See if your transactions will be successful and predict their gas usage and cost before submitting them on-chain.
Experiment with any parameter, such as sender address, input parameters, or block height, and test what would have happened if executed on the Mainnet.
Pricing is as easy as what SaaS does
A fixed price for maintenance is included
Scale to infinity while paying for cloud resources only
We know how to cut costs by an average of 40% and optimize the TCO
Free
Test-drive all infrastructure solutions for free. For individuals and teams looking to explore the power of RPC Fast APIs.
$0
Available apps:
5
Included CU:
300,000,000
Https & Websockets:
Dashboard & Statistics:
Archive data:
Support:
Region:
Europe
Possible throughput:
Basic
AI-based predictive autoscaling:
Dedicated Nodes
For middle-sized projects that demand dedicated resources for peak performance and scalability.
From $450/mo
Contact us
Networks: any network
Guaranteed resources
High security
Constant availability
Fixed price for maintenance
Transaction simulation
High customization
24/7 dedicated support
Smart Caching
Auto-updated software
Node Cluster
For high volume operations with the lowest latency, customized, global self-hosted infrastructure
From $2000/mo + infra costs
Contact us
Networks: any network
Guaranteed minimal latency
Rapid RPC response time: less than 4 ms
Fully managed service with no vendor lock-in
Tailored customization based on project needs
Enhanced security features
Flexible infrastructure options: cloud or bare metal
Reliable support backed by SLA
Advanced MEV tools
Archive Data
Find out more about how you can benefit from self-hosted infrastructure:

Blockchain transaction simulator: Risks we help to avoid

Outdated nodes
Failed node stops updating on some block, making it all outdated, e.g., due to forking.  

Our nodes are constantly updated, so you naturally avoid any problems with forks.
Unsynced nodes
Node lost the updates pace of the blockchain, which leads to validation delay and profit loss.

With the Transaction simulator, you can see where nodes may fell behind and fix them earlier.
Cloud provider issues
Sometimes, even giants fell. Your node ecosystem will get in trouble if your cloud provider is unavailable.

Our auto recovery system in the blockchain transaction simulator will set your node online in minutes, even if the connection with your cloud provider is lost.
Trustlessness issues
You are worried about the unwanted access of third-parties vendors to the validator node.

In this case, we maintain the deployment in the client’s environment to restrict third-party access or any influence on node work.

Supported blockchains

Ethereum API
BNB Chain API
Polygon API
Velas API
Polkadot
Avalance
Cardano
Arbitrum
Solana
Klaytn
Tron
Cronos
Optimism
Fantom
Polkadot
Avalance
Cardano
Arbitrum
Solana
Klaytn
Tron
Cronos
Optimism
Fantom
We support up to 85 blockchains.
Please contact us if your required chains are missing in this list
Ask any questions regarding the implementation of the Transaction Simulator to its creators.
Daniel Yavorovych
Co-Founder & CTO at RPC Fast
Schedule a call
Meet Dysnix, the team behind Transaction Simulator
Badge Top B2B Companies Clutch Global 2021
8 years of on-hand experience in Kubernetes and blockchain
We’re handling projects with a load of 1.5 million requests per day
Our team provides top-notch services for 99.9% of SLA
Roman Cherednik, Velas
Development for Financial Services Company

Thanks to the efforts of the Dysnix team, the company was able to attract the attention of the general public. The currency is stable while maintaining the necessary flexibility with the support of experts in the industry. The team has proven itself to be a reliable long-term partner.

Dmytro Haidashenko, Shelf Network
Infrastructure Maintenance for Vehicle Trading Network

In the first stage of their optimization plan alone, Dysnix managed to reduce infrastructure costs by 25%. They provide remarkable response times, which allows them to react to unforeseen situations. This makes them ideal for handling urgent tasks.Roman Cherednik, Velas

Alex Gluchowski, Matter Labs
zkSync Solution for IT Company

Dysnix contributed to the successful release of the company's product. They performed a custom auto-scaling solution to reduce the project's costs. The company now has the opportunity to earn a higher income and at the same time increase its likeability with speed and security as main offers.

Alex Momot, Remme
Custom Software Dev for Cybersecurity Company

Dysnix provided a team of Blockchain experts that was always available to assist the client. They finished a product that presented new features in the company's digital asset exchange. As a result, the company now considers their deep involvement as an extension of their own team.

Roman Cherednik, Velas
Cryptocurrency Development for Financial Services Company
See on Clutch

Thanks to the efforts of the Dysnix team, the company was able to attract the attention of the general public. The currency is stable while maintaining the necessary flexibility with the support of experts in the industry. The team has proven itself to be a reliable long-term partner.

Dmytro Haidashenko, Shelf Network
Infrastructure Maintenance for Vehicle Trading Network
See on Clutch

In the first stage of their optimization plan alone, Dysnix managed to reduce infrastructure costs by 25%. They provide remarkable response times, which allows them to react to unforeseen situations. This makes them ideal for handling urgent tasks.Roman Cherednik, Velas

Alex Gluchowski, Matter Labs
zkSync Solution for IT Company
See on Clutch

Dysnix contributed to the successful release of the company's product. They performed a custom auto-scaling solution to reduce the project's costs. The company now has the opportunity to earn a higher income and at the same time increase its likeability with speed and security as main offers.

Alex Momot, Remme
Custom Software Dev for Cybersecurity Company
See on Clutch

Dysnix provided a team of Blockchain experts that was always available to assist the client. They finished a product that presented new features in the company's crypto-asset exchange. As a result, the company now considers their deep involvement as an extension of their own team.

Frequently Asked Questions: Basic Knowledge to Remind
Does Ethereum have an API?

Yes, Ethereum has an API mechanism of access to functions and data it possesses. The single standard for Ethereum APIs is the JSON RPC which provides multiple endpoints for retrieving the data from the blockchain. There are a lot of additional libraries based on a variety of programming languages to simplify your access to Ethereum and provide you with wide functionality.

Is it safe to use blockchain API?

It’s not the most secure tool, as there are facts of stealing API keys and following unpleasant circumstances. You have to use the protected channels of communications when you get your API keys and establish connections with the most attention to detail. Of course, you should use only reliable API providers and not trust any scam services.

What is API key Ethereum?

In the terms of Ethereum, an API key is a simple secured string that identifies the connection between your application and Ethereum nodes. It’s important for both encrypted access and billing. It works as an identification and access tool. Without an API key, it’s impossible to establish a connection through the API.

How do I get blockchain API?

First, you have to select the API of a certain type depending on the purposes of your connection. Then follow the documentation instructions for accessing the blockchain API. It may slightly vary depending on the type, but generally, you’ll have to use a certain library matching your project to apply the API key and establish a connection between the blockchain and your application. Voila, you get your blockchain API.

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